Hans Zandbelt
Founder CEO at OpenIDC - Access Management Software and Support
Netherlands
Summary
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Rockstar🎓
Top SchoolHans Zandbelt is a founder-CEO and IAM architect with over two decades of experience building and modernizing identity and access management for large enterprises and national federations. He combines hands-on open-source development—authoring widely used modules like mod_auth_openidc and ngx_openidc—with strategic consultancy for clients such as Goldman Sachs, Deutsche Bank and Cisco. A standards-focused expert in OpenID Connect, OAuth 2.0 and SAML 2.0, he has shaped deployments at scale (including SURFfederatie) and represented vendors like Ping Identity in European standards and government projects. His code contributions to prominent projects such as pyoidc and lua-resty-openidc underscore a practitioner’s attention to protocol robustness and real-world interoperability. Known as a frequent conference speaker and co-founder of the Open Source IAM Consortium, he blends research-level insight with pragmatic tooling that replaces legacy SSO systems across complex organizations.
12 years of coding experience
21 years of employment as a software developer
MSc. Computer Science Tele-Informatics, MSc. Computer Science Tele-Informatics at University of TwenteGymnasium B
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Github Skills (40)
json10
pytest10
back-end-development10
apidoc10
python10
openid-connect10
http10
authentication10
user-authentication10
c1110
security10
c1710
lua10
php10
api10
Programming languages (12)
Github contributions (5)
OpenIDC/mod_auth_openidc
Mar 2014 - Jan 2023
OpenID Certified™ OpenID Connect and FAPI 2 Relying Party module for Apache HTTPd
Role in this project:
Back-end Developer
Back-end DeveloperContributions:98 releases, 4 reviews, 767 commits in 8 years 11 months
Contributions summary:Hans primarily contributed to the improvement of OpenID Connect and FAPI 2 Relying Party module for Apache HTTPd, focusing on updating email references, correcting error messages, and fixing security vulnerabilities. They also worked on the handling of specific session types and performed modifications on the session management code, which demonstrates their expertise with server-side authentication and authorization logic. Furthermore, the user addressed issues related to token handling and the discovery process within the OpenID Connect protocol.
apache-httpapache-http-serveridentityopenidconnecthttp-server
zmartzone/lua-resty-openidc
Jan 2017 - Jan 2022
OpenID Connect Relying Party and OAuth 2.0 Resource Server implementation in Lua for NGINX / OpenResty
Role in this project:Back-end Developer
Back-end DeveloperContributions:26 releases, 1 review, 171 commits in 5 years
Contributions summary:Hans primarily contributed to the core logic of the `lua-resty-openidc` library, focusing on implementing and refining the OpenID Connect and OAuth 2.0 functionalities. Their work involved modifying the library's code to handle user authentication, token validation, and session management. They also addressed bugs, implemented features, and made improvements to dependencies within the Lua environment, including updating and correcting dependencies.
nginxjwt-bearer-tokensopenidconnectopenidcoauth2
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